JPS63184568A - Steering wheel switch for vehicle - Google Patents

Abstract

PURPOSE:To prevent incomplete contact at a conducting portion, by providing a rotary member having a cancel cam onto a switch assembly associated with a directional supporter, while arranging an annular terminal at a lower section of said rotary member thereby making conductive through an annular section of a spring. CONSTITUTION:A conductive ring terminal 26 is inserted and held in place at a lower section of a cylinder 25 for holding a cancel cam in the center of a switch assembly, and one end of a battery is connected through an alarm to an L-shaped portion 27 of a terminal 26 projecting in the under face of an assembly body 6. A conductive coil spring 28 for energizing the cancel cam 20 continuously to a steering wheel 2 is provided above the ring-shaped terminal 26, and the tip portion 30 of said spring 28 at the side of the cam 20 is extended vertically in straight and inserted into a through-hole 32 made through a cancel pin section 31 of the cam 20. When a plurality of coupling pins 35 projecting from the cam 20 are fitted in recesses in the under face of the steering wheel 2, the steering wheel 2 and the cam 20 can be rotated integrally.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a handle switch for a vehicle such as an automobile.

2. Description of the Related Art In general, power supply to a handlebar switch is configured as shown in FIGS. 8 and 9, taking an alarm device as an example.

That is, a handle 2 fixed to the tip of the handle shaft 1 is provided with an alarm switch 12 having an operation piece 3, and the ground side is electrically connected to the handle shaft 1, and the other side is connected to a current collecting plate on the bottom surface of the handle 2. Connect to 4. Then, the tip head 14 of the contact conductive rod 8 is held in the main body 6 of the assembly 6 of automobile switches such as direction indicator switches arranged on the handle shaft 1, and is movable up and down and always urged upward by a spring 7. The contact conductive rod 8 is brought into pressure contact with the lower surface of the current collecting plate 4, and one IJ-wire 11 of the alarm 1o connected to the battery 9 is connected to the lower end of the contact conductive rod 8. When the alarm switch operating piece 3 disposed on the handle 2 is pressed, the alarm switch 12 closes and the current from the battery 9 is applied to the alarm 10. Lead wire 11
．． Contact conductive rod8. Current collector plate 4. It flows to the handle shaft 1, and an alarm 1o is activated.

Problems to be Solved by the Invention In this configuration, the steering wheel 2 is constantly rotated to drive the vehicle, but the automobile switch 6 is fixed to the column cover 13 and is not connected to the steering wheel 2. Since they do not rotate together, the current collector plate 4 and the tip head 14 of the contact conductive rod 8 are constantly sliding. At this time, the tip head 14 of the contact conductive rod 8 is in contact with the current collector plate 4 under a fairly strong predetermined pressure by the spring 7 in order to obtain an appropriate contact pressure, so the wear between the two is severe. There is.

To prevent this wear, a large amount of grease is applied to the current collector plate 4 on the bottom surface of the handle 2 when assembling the car, but since the handle 2 constantly rotates when driving the car, if the handle 2 rotates a lot, I see, the grease on the current collector plate 4 is thrown out by the tip head 14 of the contact conductive rod 8, and there may be variations in the amount of grease applied when applying grease, or the grease may flow out depending on the environment (temperature). hand,
In fact, during long-term operation, large wear occurs on the contacting surfaces of the current collector plate 4 and the contact conductive rod 8. In particular, the wear of the tip head 14 of the contact conductive rod 8 is severe, and the metallic sound of sliding becomes louder every time the handle 2 is rotated. Sufficient electrical contact pressure could not be obtained, and the alarm 10 would not operate even if the operating piece 3 was pressed, making it impossible to alert pedestrians or oncoming vehicles, which was dangerous.

Therefore, the present invention solves the problems caused by the noise caused by the wear and poor contact.In order to achieve the above object, the present invention provides a switch assembly equipped with a direction indicator, etc., which rotates integrally with the handle and operates the direction indicator lever. In addition to providing a rotating member with a cancel cam that automatically returns the lever to the neutral position when the handle is rotated, this switch assembly is placed around the handle shaft on the underside of the handle, and the switch assembly is arranged around the handle shaft to receive power from the battery, load signals, etc. The configuration is such that power is supplied to the switch configured in the handle via the switch assembly,
An annular terminal electrically connected to the battery is arranged at the lower part of the rotating member, and a spring-shaped conductive member electrically connected to the terminal is arranged at the lower part of the rotating member. .

If the configuration is more than the function, there will be contact between the spring-shaped conductive member and the annular terminal below it, but in this case, there will be circumferential contact between the annular part below the spring and the annular terminal, so the conventional point is Compared to contact, the local contact pressure is smaller, so there is less wear and tear, and since it is a spring-like conductive member, even a small amount of wear will cause it to stretch and prevent poor contact.

EXAMPLE Hereinafter, an example of the present invention will be explained using FIGS. 1 to 4.

As with the conventional example, the power supply device for a handlebar switch alarm will be explained as an example, but the basic configuration of the alarm device is the same as the 8th one.
This is the same as that shown in FIG. 9, and only the features of the present invention will be described here.

In the figure, the center cancel cam 2 of the switch assembly 5
The lower part of the cylindrical column 26 holding 0 has electrical conductivity,
A ring-shaped terminal 26 is inserted and held, and the lead wire 11 on the battery side is electrically connected to the L-shaped portion 27 of the terminal 26 protruding from the bottom surface of the main body 6. Further, above the ring-shaped terminal 26, there is provided a conductive coil spring (conductive member) 28 that always urges the cancel cam 2o toward the handle 2. It fits into the cylindrical part. The coil spring tip 3o on the cancel cam side of the coil spring 28 has a straight and vertically extended shape, and this straight portion β is inserted into the through hole 32 provided in the cancel pin portion 31 of the cancel cam 20. The handle 2 portion includes a straight end 30 of the coil spring 28 protruding from the cancel cam and a lead wire 33 from the alarm switch.
A notch opening 34 is provided to facilitate electrical connection between the lead wire 33 and the coil spring 3.
0 is electrically connected.

The handle 2 and the cancel cam 20 are the cancel cam 2.
2 to 3 handle connecting pins 35 protruding from 0,
It is configured to rotate integrally with the handle 2 by fitting into the fitting recess 36 on the lower surface of the handle 2 and constantly biased toward the handle 2 by the coil spring 28. When the operating piece 3 of the alarm switch located on the handle 2 is pressed, the alarm switch 12 closes and the current from the battery 9 is transferred to the alarm 10. Lead wire 11. Terminal 26. Coil spring 28. It flows to the handle shaft 1, and the alarm 10 is activated. Note that 43 is an operating frame, and 44 is a direction indicator lever.

Effects of the Invention As described above, according to the present invention, there is contact between the spring-shaped conductive member and the annular terminal below it, and in this case, there is circumferential contact between the annular portion below the spring and the annular terminal. Compared to point contact, the local contact pressure is smaller and wear is reduced accordingly.Furthermore, since it is a spring-like conductive member, even a small amount of wear can cause it to stretch and prevent poor contact.

Furthermore, the configuration is simplified because a spring is used to bias the cancel cam toward the handle.

[Brief explanation of the drawing]

FIG. 1 is a basic configuration diagram showing an embodiment of the vehicle handle switch of the present invention, FIG. 2 is a plan view of the switch assembly,
Fig. 3 is an enlarged sectional view of the main part, Fig. 4 is an exploded perspective view of the main part, Fig. 5 is a basic configuration diagram of a conventional vehicle handle switch, and Fig. 6 is a conventional vehicle alarm system. FIG. 3 is an enlarged sectional view of main parts. 1...Handle shaft, 2...Handle, 3...Operation piece, 5...Switch assembly, 6...Main body, 12... ...Alarm switch, 2o...Cancel cam, 26...Ring terminal, 27...L-shaped part, 28...
...Coil spring, 29...Soba, 30...Tip,
31...Cancel pin, 32...Through hole,
33...Lead wire, 34...Notch opening, 35...Connecting pin. Name of agent: Patent attorney Toshio Nakao and one other name
1 Figure! ? Figure 2 π Figure 3/Figure 4, 9 Figure 5 Figure 6

Claims (1)

[Claims] A switch assembly equipped with a direction indicator, etc. is provided with a rotating member that rotates integrally with the handle and has a cancel cam that automatically returns the lever to a neutral position by rotating the handle when the direction indicator lever is operated. In addition, this switch assembly is arranged around the handle shaft on the lower surface of the handle, and power is supplied from the battery, load signals, etc. to the switch configured on the handle via the switch assembly, and the switch assembly is arranged below the rotating member. A steering wheel switch for a vehicle, in which a ring-shaped terminal electrically connected to a battery side is disposed at the bottom, and a spring-shaped conductive member electrically connected to the terminal is disposed at a lower part of the rotating member.